Nature Search

Passive phloem loading and long-distance transport in a synthetic tree-on-a-chip

Vascular plants use osmotic pressure differences to transport sugars. A synthetic microfluidic model explores the nonlinear dynamics of this process, showing that passive loading is sufficient to drive long-distance transport in large plants and trees.

Jean Comtet
Kaare H. Jensen
A. E. Hosoi
Research20 Mar 2017
Nature Plants

Volume: 3, P: 1-8
Pairwise frictional profile between particles determines discontinuous shear thickening transition in non-colloidal suspensions

Shear thickening characterizes liquid suspensions of particles that reversibly solidify subject to stress. Here, Comtetet al. show that shear thickening occurs at the transition from lubricated contacts to frictional contacts at a single-particle level, which can be linked to the change in macroscopic rheology.

Jean Comtet
Guillaume Chatté
Annie Colin
ResearchOpen Access31 May 2017
Nature Communications

Volume: 8, P: 1-7
Defect-modulated ionic friction at hBN/water interfaces

Charge transport at solid/liquid interfaces is crucial for the energy realm, yet traditional methods fail to capture the underlying molecular processes. Here, a single-molecule microscopy optofluidic platform reveals how surface defects modulate charge dynamics and lead to anomalous transport.

Menghua Zhao
Kenji Watanabe
Jean Comtet
ResearchOpen Access01 Sept 2025
Communications Materials

Volume: 6, P: 1-9
Direct observation of water-mediated single-proton transport between hBN surface defects

Super-resolution microscopy of defects in a two-dimensional material unveils the transport of single proton charges at solid/water interfaces.

Jean Comtet
Benoit Grosjean
Aleksandra Radenovic
Research25 May 2020
Nature Nanotechnology

Volume: 15, P: 598-604
Liquid-activated quantum emission from pristine hexagonal boron nitride for nanofluidic sensing

Two-dimensional crystals of hexagonal boron nitride become fluorescent when immersed in common solvents. Now, this phenomenon is used in the design of in-liquid sensors operating at the nanometre scale.

Nathan Ronceray
Yi You
Aleksandra Radenovic
ResearchOpen Access31 Aug 2023
Nature Materials

Volume: 22, P: 1236-1242
Double-in vitro maturation increases the number of vitrified oocytes available for fertility preservation when ovarian stimulation is unfeasible

Nathalie Sermondade
Michaël Grynberg
Charlotte Sonigo
ResearchOpen Access29 Oct 2020
Scientific Reports

Volume: 10, P: 1-5
Nanoscale capillary freezing of ionic liquids confined between metallic interfaces and the role of electronic screening

Ionic liquids are important for energy storage and lubrication but their behaviour at electrified interfaces remains elusive. Confined ionic liquids are now shown to exhibit a dramatic change to a solid-like phase pointing to capillary freezing.

Jean Comtet
Antoine Niguès
Alessandro Siria
Research27 Mar 2017
Nature Materials

Volume: 16, P: 634-639
Nonlinear flow response of soft hair beds

A bed of deformable hairs is shown to exhibit a nonlinear response to fluid flows. The biomimetic system suggests that hair-covered surfaces in living systems may function to reduce fluid drag as a means of minimizing excessive stresses.

José Alvarado
Jean Comtet
A. E. Hosoi
Research21 Aug 2017
Nature Physics

Volume: 13, P: 1014-1019
Atomic rheology of gold nanojunctions

The mechanical behaviour of gold nanojunctions is investigated at the atomic scale using tuning-fork atomic-force microscopy, revealing a fluidic state at high strains with signatures of viscous-like dissipation and capillary-like adhesion.

Jean Comtet
Antoine Lainé
Alessandro Siria
Research08 May 2019
Nature

Volume: 569, P: 393-397

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